cyanide cyanidation • cyanide group · · · Info · Definitions · Synonyms · Characters · · cyanide · · Text Latin · · Script 7 · · Length 3 · · Syllables Definitions · · · (noun) any of a class of organic compounds containing the cyano radical -CN. Synonyms: nitrile, nitril. · · Noun Definition 1 (noun) an extremely poisonous salt of hydrocyanic acid. · · Noun Definition 2 Synonyms · · · nitrile · · Synonym 1 nitril · · Synonym 2 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 n latin small letter n U+006E y latin small letter y U+0079